StepMania is a music/rhythm game. The player presses different buttons in time to the music and to note patterns that scroll across the screen. Features 3D graphics, visualizations, support for gamepads/dance pads, a step recording mode, and more!
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The COLLADA Document Object Model (DOM) is an application programming interface (API) that provides a C++ object representation of a COLLADA XML instance document. Contact a project admin to become a developer!

OpenSteer is a C++ library to help build steering behaviors for autonomous characters in games and animation. OpenSteer provides an app which displays predefined demos of steering behaviors. You can prototype, visualize and debug your own as a plug-in.

Scrupp is a cross-platform 2D engine which uses SDL and OpenGL for visualization. It is controlled by external Lua scripts. The core supports various image, sound, music and font formats. The hard work is done by plugins written in Lua.

Animevision is an anime management software. With it you can manages the anime you are viewing with functionality like Vision System, advanced multi-pass filtering with basic boolean operators like AND/OR/NOT, images library with Zoom, and even more.

The fortbattle player replays a fortbattle of the browser game "The West" (http://www.the-west.net). It displays the battle like the ingame flash player, but you can control the speed, skip rounds and see some statistics. Ingame use req. GreaseMonk

A3P is an indie online shooter that combines the best aspects of the Third Person Shooter and Real-Time Strategy genres. Load out your units with weapons and special abilities, then lead them to victory on the battlefield!

GameGuts is a collection of low-level services for game development. It is not a game engine; it is a foundation on which to build an engine. A DLL with a C API, targeted at higher-level languages. Includes bindings for .NET, more to come.